Spatial and Temporal Robustness of Sr/Ca-SST Calibrations in Red Sea Corals: Evidence for Influence of Mean Annual Temperature on Calibration Slopes

S. A. Murty, W. N. Bernstein, J. E. Ossolinski, R. S. Davis, N. F. Goodkin, K. A. Hughen

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Sr/Ca ratios recorded in the aragonite skeleton of massive coral colonies are commonly used to reconstruct seasonal- to centennial-scale variability in sea surface temperature (SST). While the Sr/Ca paleothermometer is robust in individual colonies, Sr/Ca-SST relationships between colonies vary, leading to questions regarding the utility of the proxy. We present biweekly-resolution calibrations of Sr/Ca from five Porites lobata/lutea corals to satellite SST across 10° of latitude in the Red Sea to evaluate the Sr/Ca proxy across both spatial and temporal scales. SST is significantly correlated with coral Sr/Ca at each site, accounting for 69-84% of Sr/Ca variability (p
Original languageEnglish (US)
Pages (from-to)443-456
Number of pages14
JournalPaleoceanography and Paleoclimatology
Volume33
Issue number5
DOIs
StatePublished - May 9 2018
Externally publishedYes

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